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Qu Wenruo
2bb2dd24cc
This test will test if we can still do the following operations when a full is full: - buffered write into unpopulated preallocated extent - clone the untouched preallocated extent - fsync - no data loss if power loss happens after above fsync Above operations should not fail, as they takes no extra data space. Xfs passes the test, while btrfs fails at fsync and has data loss. The fix for btrfs is: "btrfs: Flush before reflinking any extent to prevent NOCOW write falling back to CoW without data reservation" Signed-off-by: Qu Wenruo <wqu@suse.com> Reviewed-by: Filipe Manana <fdmanana@suse.com> Signed-off-by: Eryu Guan <guaneryu@gmail.com>
4 lines
112 B
Plaintext
4 lines
112 B
Plaintext
QA output created by 546
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md5 before cdccc121ae95c72fdbe53d8e343ef5ee
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md5 after cdccc121ae95c72fdbe53d8e343ef5ee
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